TerrorJack

#!/usr/bin/env bash

set -euo pipefail

apt update
apt install -y automake build-essential curl git gnupg libffi-dev libncurses-dev libgmp-dev python3 libdw-dev

curl -f -L --retry 5 https://apt.llvm.org/llvm-snapshot.gpg.key | gpg --dearmor -o /usr/share/keyrings/llvm-snapshot.gpg
echo "deb [signed-by=/usr/share/keyrings/llvm-snapshot.gpg] https://apt.llvm.org/bullseye llvm-toolchain-bullseye main" >> /etc/apt/sources.list.d/llvm-toolchain.list
echo "deb [signed-by=/usr/share/keyrings/llvm-snapshot.gpg] https://apt.llvm.org/bullseye llvm-toolchain-bullseye-18 main" >> /etc/apt/sources.list.d/llvm-toolchain.list

TerrorJack

How to instrument ghc with ghc-debug

Assuming you already know what ghc-debug is about, and want to use it to debug the ghc program itself.

Prepare a ghc-debug checkout

A recent ghc-debug checkout is required, since it contains important fixes not release on Hackage yet.

Apply the following patch:

TerrorJack

Wrong exit code for T24171()(expected 0 , actual 2 )
Stderr  run  ( T24171 ):
main: internal error: LDV_recordDead: Failed to find counter for closure 0x42004fd028
    (GHC version 9.9.20240111 for x86_64_unknown_linux)
    Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug
gmake[1]: *** [Makefile:8: build_and_run] Aborted (core dumped)
gmake: *** [Makefile:5: clean_build_and_run] Error 2
*** unexpected failure for T24171(normal)

TerrorJack

Anti-hype LLM reading list

Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts and experience preferred (super rare at this point).

My own notes from a few months back.

Background

• Survey of LLMS
• Self-attention and transformer networks

TerrorJack

#!/usr/bin/env bash

set -euo pipefail

export CC="ccache clang"
export CXX="ccache clang++"
export AR=llvm-ar

./configure --enable-lto --experimental-enable-pointer-compression --fully-static --ninja
ninja -C out/Release -v

TerrorJack

#include <regex.h>
#include <stdlib.h>

int foo() {
  const char *target_string = "hello wasm";
  const char *pattern = "wasm";

  regex_t regex_compiled;
  int return_code;

TerrorJack

cmake -G Ninja \
		-DCMAKE_BUILD_TYPE=RelWithDebInfo \
		-DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
		-DCMAKE_C_COMPILER=clang \
		-DCMAKE_CXX_COMPILER=clang++ \
		-DLLVM_CCACHE_BUILD=ON \
		-DLLVM_ENABLE_TERMINFO=OFF \
		-DLLVM_ENABLE_ZLIB=OFF \
		-DLLVM_ENABLE_ZSTD=OFF \
		-DLLVM_HAVE_LIBXAR=OFF \

TerrorJack

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [{
    "name": "clang",
    "type": "cppdbg",
    "request": "launch",
    "program": "${workspaceRoot}/build/install/opt/wasi-sdk/bin/clang",

TerrorJack

{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  inputs.haskell-nix.url = "github:input-output-hk/haskell.nix";
  inputs.haskell-nix.inputs.nixpkgs-unstable.follows = "nixpkgs";

  outputs = { self, haskell-nix, nixpkgs, }:
    haskell-nix.inputs.flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
      let
        pkgs = import nixpkgs {
          inherit system;

TerrorJack

for(let e of document.getElementsByClassName("inspector_torrent_file_list_entryodd")) {
  if (e.children[2].innerText.includes("padding_file") && e.children[0].checked) {
    e.children[0].click();
  }
}